According to the profound classification of Hawking [1]}, a modeling of reality in theoretical physics is good if it contains few adjustable elements, agrees with and explain existing observations, and makes detailed predictions about future observations. For instance, within our personal selection, in the famous treatment of Landau on extended, interacting Fermi systems the determination of the low-energy excitation spectrum requires the introduction of just one adjustable element [2]}, [3]}, the quasiparticle effective mass (\(m^{*}\) ).
